[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

Set value in a excel worksheet to equal the length of the previous column in C#

Posted on 2016-10-03
10
Medium Priority
?
104 Views
Last Modified: 2016-11-01
I have a excel workbook with multiple worksheets.I would like to set one column H to be a formula field which is equal to the length of column G. How can I do it using C#.

Thanks,
Aditya
0
Comment
Question by:giveindia
  • 5
  • 5
10 Comments
 
LVL 54

Expert Comment

by:Rgonzo1971
ID: 41826149
Hi,

pls try something like this
string s = "=LEN(RC[-1])";
Range rng1 = sheet.get_Range(sheet.Cells[7, 2], (sheet.Cells[7, 2] as Excel.Range).get_End(Excel.XlDirection.xlDown)).Offset[0,1];
rng1.FormulaR1C1 = s;
rng1.Value2 = rng1.Value2;

Open in new window

Regards
0
 

Author Comment

by:giveindia
ID: 41826219
What is value1 and value2 here ?
0
 
LVL 54

Expert Comment

by:Rgonzo1971
ID: 41826222
.Value2 gives you the underlying value of the cell (could be empty, string, error, number (double) or boolean)

.Value gives you the same as .Value2 except if the cell was formatted as currency or date it gives you a VBA currency (which may truncate decimal places) or VBA date.

Using .Value is usually a bad idea because you may not get the real value from the cell, and they are slower than .Value2
0
Never miss a deadline with monday.com

The revolutionary project management tool is here!   Plan visually with a single glance and make sure your projects get done.

 

Author Comment

by:giveindia
ID: 41826238
So the first time the excel is saved the value gets saved correctly. If I open the excel and edit a cell the length column does not get updated.

Thanks,
Aditya
0
 
LVL 54

Expert Comment

by:Rgonzo1971
ID: 41826247
pls try
        string s = "=LEN(RC[-1])";
        Rng1= (Excel.Range)xlWorkSheet.get_Range(xlWorkSheet.Cells[2, 7] as Excel.Range, (xlWorkSheet.Cells[2, 7] as Excel.Range).get_End(Excel.XlDirection.xlDown)).Offset[0,1];
        Rng1.FormulaR1C1 = s;
        Rng1.Value2 = Rng1.Value2;

Open in new window

0
 

Author Comment

by:giveindia
ID: 41826250
THis is the code that I have.
 string s = "=LEN(RC[-1])";
                               Microsoft.Office.Interop.Excel.Range rng1 = wsheet.get_Range(wsheet.Cells[2, 7], (wsheet.Cells[dsMDOID.Tables[0].Rows.Count + 1, 7] as Excel.Range).get_End(Excel.XlDirection.xlDown)).Offset[0, 1];
                               rng1.FormulaR1C1 = s;
                               rng1.Value2 = rng1.Value2;
0
 

Author Comment

by:giveindia
ID: 41826257
Also even if  I have 20 rows in the sheet it seems to apply the formula to around 65K rows.
0
 
LVL 54

Accepted Solution

by:
Rgonzo1971 earned 2000 total points
ID: 41826355
then try
  string s = "=LEN(RC[-1])";
Microsoft.Office.Interop.Excel.Range rng1 = wsheet.get_Range(wsheet.Cells[2, 7], (wsheet.Cells[dsMDOID.Tables[0].Rows.Count + 1, 7] as Excel.Range)).Offset[0, 1];
rng1.FormulaR1C1 = s;
rng1.Value2 = rng1.Value2; 

Open in new window

0
 

Author Comment

by:giveindia
ID: 41827435
The code you posted seems to be similar to what I had.

Thanks,
Adittya
0
 
LVL 54

Expert Comment

by:Rgonzo1971
ID: 41827470
get_end removed
0

Featured Post

The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you see single cell contains number and text, and you have to get any date out of it seems like cracking our heads.
In this article, I will demonstrate that how to do a PST migration from Exchange Server to Office 365. This method allows importing one single PST, or multiple PST's at once.
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…
The Relationships Diagram is a good way to get an overall view of what a database is keeping track of. It is also where relationships are defined. A relationship specifies how two tables connect to each other. As you build tables in Microsoft Ac…

613 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question